US10696434B2 - Method and device for producing containers which are filled with a liquid filling substance - Google Patents

Method and device for producing containers which are filled with a liquid filling substance Download PDF

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Publication number
US10696434B2
US10696434B2 US13/982,800 US201113982800A US10696434B2 US 10696434 B2 US10696434 B2 US 10696434B2 US 201113982800 A US201113982800 A US 201113982800A US 10696434 B2 US10696434 B2 US 10696434B2
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Prior art keywords
filling substance
filling
proportion
carbon dioxide
substance
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US13/982,800
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US20130307197A1 (en
Inventor
Frank Haesendonckx
Dieter Klatt
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KHS GmbH
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KHS Corpoplast GmbH
KHS GmbH
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Priority claimed from DE102011009888A external-priority patent/DE102011009888A1/de
Priority claimed from DE102011009889A external-priority patent/DE102011009889A1/de
Priority claimed from DE102011011076A external-priority patent/DE102011011076A1/de
Priority claimed from DE102011012664A external-priority patent/DE102011012664A1/de
Priority claimed from DE102011012665A external-priority patent/DE102011012665A1/de
Application filed by KHS Corpoplast GmbH , KHS GmbH filed Critical KHS Corpoplast GmbH
Assigned to KHS CORPOPLAST GMBH, KHS GMBH reassignment KHS CORPOPLAST GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HAESENDONCKX, FRANK, KLATT, DIETER
Publication of US20130307197A1 publication Critical patent/US20130307197A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B5/00—Packaging individual articles in containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, jars
    • B65B5/02—Machines characterised by incorporation of means for making the containers or receptacles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/46—Component parts, details or accessories; Auxiliary operations characterised by using particular environment or blow fluids other than air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/08—Biaxial stretching during blow-moulding
    • B29C49/10—Biaxial stretching during blow-moulding using mechanical means for prestretching
    • B29C49/122—Drive means therefor
    • B29C49/1222—Pneumatic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/08—Biaxial stretching during blow-moulding
    • B29C49/10—Biaxial stretching during blow-moulding using mechanical means for prestretching
    • B29C49/122—Drive means therefor
    • B29C49/123—Electric drives, e.g. linear motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D22/00—Producing hollow articles
    • B29D22/003—Containers for packaging, storing or transporting, e.g. bottles, jars, cans, barrels, tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B3/02—Machines characterised by the incorporation of means for making the containers or receptacles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B3/02—Machines characterised by the incorporation of means for making the containers or receptacles
    • B65B3/022—Making containers by moulding of a thermoplastic material
    • B29C2049/1228—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/46—Component parts, details or accessories; Auxiliary operations characterised by using particular environment or blow fluids other than air
    • B29C2049/4602—Blowing fluids
    • B29C2049/4626—Blowing fluids containing carbon dioxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/46—Component parts, details or accessories; Auxiliary operations characterised by using particular environment or blow fluids other than air
    • B29C2049/4602—Blowing fluids
    • B29C2049/465—Blowing fluids being incompressible
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/46—Component parts, details or accessories; Auxiliary operations characterised by using particular environment or blow fluids other than air
    • B29C2049/4602—Blowing fluids
    • B29C2049/465—Blowing fluids being incompressible
    • B29C2049/4664—Blowing fluids being incompressible staying in the final article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/46—Component parts, details or accessories; Auxiliary operations characterised by using particular environment or blow fluids other than air
    • B29C2049/4673—Environments
    • B29C2049/4698—Pressure difference, e.g. over pressure in room
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/58—Blowing means
    • B29C2049/5841—Plural independent blowing paths
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/58—Blowing means
    • B29C49/60—Blow-needles
    • B29C2049/6018—Constructional features of the air outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/0715—Preforms or parisons characterised by their configuration the preform having one end closed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/06—Injection blow-moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/08—Biaxial stretching during blow-moulding
    • B29C49/10—Biaxial stretching during blow-moulding using mechanical means for prestretching
    • B29C49/12—Stretching rods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/08—Biaxial stretching during blow-moulding
    • B29C49/10—Biaxial stretching during blow-moulding using mechanical means for prestretching
    • B29C49/12—Stretching rods
    • B29C49/121—Stretching rod configuration, e.g. geometry; Stretching rod material
    • B29C49/1212—Stretching rod configuration, e.g. geometry; Stretching rod material the stretching rod comprising at least one opening on the surface, e.g. through which compressed air is blown into the preform to expand the same
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/28—Blow-moulding apparatus
    • B29C49/30—Blow-moulding apparatus having movable moulds or mould parts
    • B29C49/36—Blow-moulding apparatus having movable moulds or mould parts rotatable about one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/4273—Auxiliary operations after the blow-moulding operation not otherwise provided for
    • B29C49/42808—Filling the article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B3/22—Defoaming liquids in connection with filling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67B—APPLYING CLOSURE MEMBERS TO BOTTLES JARS, OR SIMILAR CONTAINERS; OPENING CLOSED CONTAINERS
    • B67B3/00—Closing bottles, jars or similar containers by applying caps
    • B67B3/20—Closing bottles, jars or similar containers by applying caps by applying and rotating preformed threaded caps

Definitions

  • a blow molder includes a heating unit for tempering or pre-heating (thermal conditioning) of the parisons, as well as a blower device having at least one blowing station, in the area of which the respective parison that has previously been tempered is expanded into a container biaxially or multiaxially.
  • the expansion is effected with the aid of a compressed gas (compressed air) as a pressure medium, which is introduced into the parison to be expanded using cavity pressure.
  • the containers produced by blow molding are fed into a subsequent filling unit, and filled there with the envisaged product or filling substance.
  • a separate blow molder and a separate filling unit are used.
  • the separate blow molder and the separate filling machine are combined to form a machine module, i.e. an integral blow filling device, wherein moreover the blow molding and filling up are carried out at separate machinery components and successively.
  • the task of the invention is to highlight a method which, with the hydraulic molding procedure, or with the hydraulic container molding, avoids the risk of the respective shaping and filling station becoming polluted, also in the case of a filling substance containing, in particular also at high throughputs (number of containers shaped and filled per unit of time) and/or in the case of the filling substance placed into the respective container having a high CO2 concentration.
  • the filling substance or portions or components of the filling substance are conveyed in at least two process phases or in at least two process phases of the respective shaping and filling phase, with different concentrations of carbon dioxide and/or at different temperatures.
  • the respective parison is guided, when being shaped, into a container blister that develops, and subsequently into the container possessing the final contour or design, so that a center, typically located in the region of a parison knoll, is defined and positioned reproducibly.
  • a center typically located in the region of a parison knoll
  • Such a defined positioning is important, as, when shaping or expanding the parison in the container, a biaxial orientation of the material of the parison is carried out, and, for this, a targeted and predefinable material distribution within the cladding of the container formed is necessary.
  • uncontrolled container molding on the other hand, undesired, and in particular irregular, material distributions are to be expected.
  • the filling substance is, for example, at least partially conveyed through the stretching rod.
  • the filling substance can also, at least partially, be conveyed past the stretching rod.
  • a further embodiment consists in a setting load generated being measured. Only minor setting loads to be applied by the stretching rod can be guaranteed by a volumetric flow rate of the filling substance being controlled depending upon a setting load measured.
  • the method in accordance with the invention is preferably designed as an enhancement of the invention in such a way that, in the second process phase, the filling substance or the proportion of filling substance is supplied with the higher concentration of carbon dioxide; and/or
  • the device in accordance with the invention is preferably designed, in the enhancement of the invention, in such a way
  • FIG. 1 A schematic representation of a basic construction of a device or a molding and filling machine for carrying out the hydraulic container molding using a filling substance;
  • FIG. 2 A schematic longitudinal section through a parison, with partially inserted stretching rod, as well as a venting device;
  • FIG. 3 A schematic longitudinal section through a molded container, with partially inserted stretching and filling device
  • FIG. 4 A longitudinal section through a molding and filling unit or station in the case of a modified embodiment
  • FIG. 5 A longitudinal section through a molding and filling unit or station with a seal to prevent delay yield
  • FIG. 6 An embodiment with an adjustable feed for the filling substance and separate, adjustable ventilation
  • FIG. 7 A schematic representation of a combined shaping, filling closing system or station.
  • FIG. 8 Another embodiment of the combined shaping, filling and closing system or station in accordance with FIG. 7 ;
  • FIGS. 9-11 each as a schematic sectional representation, a further embodiment of the stretching rod of a shaping and filling machine or station in accordance with the invention during different process phases;
  • FIG. 12 A similar representation to that shown in FIGS. 10-12 , being a further modified embodiment of the stretching rod of the shaping and filling machine or station in accordance with the invention.
  • FIG. 1 Schematically shown parisons ( 2 ), also termed “pre-forms”, are conveyed by a feeding system ( 1 ), using a transfer wheel ( 3 ) of a heating apparatus ( 4 ).
  • the parisons ( 2 ) can, for example, depending on their application, be transported upwards, together with their outlet sections ( 5 ), in a vertical direction, or also in a vertical direction downwards.
  • the heating apparatus ( 4 ) is, for example, equipped with heating units ( 6 ), which are located along transport equipment ( 7 ).
  • a revolving chain may, for example, be used as transport equipment ( 7 ).
  • IR or NIR emitters, as well as other emitters emitting energy are, for example, suitable as heating units ( 6 ).
  • the parisons ( 2 ) are passed over from a transfer wheel ( 8 ) to a rotor or process wheel ( 9 ) that can be rotated, i.e. rotationally driven around a vertical machine shaft or to shaping and filling stations ( 10 ), which are provided for on the rotor or process wheel ( 9 ).
  • the process wheel ( 9 ) is equipped with multiple such shaping stations ( 10 ), the area of which both the parisons ( 2 ) are moulded in the schematically shown containers ( 11 ) and the containers ( 11 ) are also filled with the filling substance provided for.
  • each container ( 11 ) is shaped simultaneously with being filled, wherein the filling substance serves as a pressure medium in the case of molds,
  • the containers ( 11 ) After being shaped and filled, the containers ( 11 ) are transported away from the process wheel ( 9 ) by an extraction wheel ( 12 ) and conveyed to an output line ( 13 ).
  • closing elements ( 15 ) means are provided for to convey schematically shown closing elements ( 15 ) to the process wheel ( 9 ) via an input facility ( 14 ).
  • the closing element ( 15 ) may, for example, be constructed as a screw-on closing cap, a crown cap or a heat sealing film.
  • thermoplastic materials preferably different thermoplastic materials can be used.
  • PET polyethylene terephthalate
  • PE polyethylene
  • PEN polyethylene naphthalate
  • PP polypropylene
  • the dimensioning, as well as the weight, of the parisons ( 2 ) may be adjusted to the size, weight and/or design of the containers ( 11 ) to be manufactured.
  • heating apparatus ( 4 ) typically a large number of electric and electronic components are arranged. Moreover, the heating units ( 6 ) are equipped with moisture-sensitive reflectors. As, in the area of the process wheel ( 9 ), the containers are filled and molded using the liquid filling substance, it is to be ensured that unintended seepage of moisture into the area of the heating apparatus ( 4 ) is avoided.
  • the latter can, for example, be done by means of a partition ( 16 ), which at least functions as a splash guard.
  • the parisons ( 2 ) and/or the containers ( 11 ) are preferably handled using tongs and/or the outlet section ( 5 ), at least in certain areas of clamping or plug-in elements to be pressurized either from the inside or the outside.
  • FIG. 2 shows a longitudinal section through a parison ( 2 ), into which a stretching rod ( 17 ) is inserted.
  • the stretching rod ( 17 ) serves to at least intermittently guide the parison ( 1 ) while the container is being shaped ( 11 ).
  • a knoll ( 18 ) of the stretching rod ( 17 ) and a base ( 19 ) of the parison ( 2 ). If the stretching rod ( 17 ) is inserted into the parison ( 2 ) further, a longitudinal stretching of the parison ( 2 ) is caused.
  • a filling substance ( 21 ) taken from a supply device ( 20 ) is fed into the parison ( 2 ).
  • the filling substance ( 21 ) is metered using a multi-port metering valve ( 22 ).
  • the stretching rod ( 17 ) is, at least in places, hollow, or constructed with a channel, and the filling substance ( 21 ) is conveyed into an interior space ( 23 ) of the stretching rod ( 17 ).
  • outflow openings ( 24 ) are placed, which can be blocked against the multi-port metering valve ( 22 ) by a back-pressure valve ( 25 ). Unintended dripping of the filling substance ( 21 ) from the stretching rod ( 17 ) can be avoided or minimized in this way.
  • the parison ( 2 ) can be ventilated using and is metered using a multi-port metering valve ( 26 ).
  • the air escape valve ( 26 ) is connected with an outflow opening ( 27 ), which is located in the area of one of the connecting elements ( 28 ) exerting pressure on the parison ( 2 ).
  • the stretching rod ( 17 ) can be positioned through the connecting element ( 28 ).
  • the parison ( 2 ) is sealed off from the connecting element ( 28 ) by a seal ( 29 ), which may, for example, be constructed as an O-ring.
  • An interior space ( 30 ) of the parison ( 2 ) can be connected to the outflow opening ( 2 ) via an annular clearance ( 31 ). In this respect, the annular clearance ( 31 ) encloses areas of the stretching rod ( 17 ).
  • FIG. 3 schematically shows a similar device to the one shown in the representation in accordance with FIG. 2 using a hollow stretching rod ( 17 ) with an in-built back-pressure valve ( 25 ).
  • a container ( 11 ) that is already ready-formed.
  • a plurality of outflow openings ( 24 ) is located in the area of the stretching rod ( 17 ).
  • outflow openings ( 24 ) are positioned at various different heights along a longitudinal axis ( 32 ) of the stretching rod ( 17 ).
  • the embodiment shown likewise displays an alignment of the outflow openings ( 24 ) with a substantially horizontal outflow direction.
  • a solid stretching rod ( 17 ) is used.
  • the filling substance ( 21 ) is conveyed past the stretching rod ( 17 ) along at least one flow channel.
  • the annular clearance ( 31 ) is used for this purpose. Also in the case of this embodiment, it is possible to carry out targeted ventilation.
  • FIG. 5 shows an embodiment in the case of which the stretching rod ( 17 ) possesses an embodiment optimized to prevent delay yield.
  • a sealing element ( 33 ) is located for this purpose.
  • the sealing element ( 33 ) can, for example, be provided by enlarging the diameter of the stretching rod ( 17 ).
  • a suitable choice of material is likewise conceivable.
  • the outflow openings ( 24 ) of the stretching rod ( 17 ) are, after positioning the stretching rod ( 17 ) accordingly, sealed off from the container ( 11 ), arranged separately, so that any delay yield from the interior space ( 23 ) of the stretching rod ( 17 ) can certainly be avoided.
  • at least one store ( 35 ) is arranged in the area of the connecting element ( 28 ), for guiding the stretching rod ( 17 ).
  • FIG. 6 shows an embodiment, in the case of which in turn, a solid stretching rod ( 17 ) is used.
  • a solid stretching rod ( 17 ) Through flow channels flowing past the stretching rod ( 17 ), in particular through the annular clearance ( 31 ), both the multi-port metering valve ( 22 ) for the filling substance ( 21 ) and the air escape valve ( 26 ) are connected to the interior ( 30 ) of the parison ( 2 ) or the container ( 11 ).
  • the outflow opening ( 27 ) is located, in a radial direction of the connecting element ( 28 ) opposite a feed opening ( 36 ) that is connected to the multi-port metering valve ( 22 ).
  • FIG. 7 shows an embodiment in the case of which the container ( 11 ) is also closed in the area of the process wheel ( 9 ) in accordance with FIG. 1 .
  • the container ( 11 ) is, in this respect, still located in the area of a mold ( 37 ), which forms a part of the shaping station ( 10 ) in accordance with FIG. 1 .
  • a closing system ( 38 ) is, in the case of this embodiment, located coaxially to the connecting element ( 28 ) in regard to the longitudinal axis ( 32 ).
  • the closing system ( 38 ) possesses, for example, grippers ( 39 ), arranged in such a way that they can be swiveled, which are provided for in order to exert pressure on the closing element ( 15 ).
  • the closing system ( 38 ) It is in particular intended to place the closing system ( 38 ) so that it can be moved rotationally in relation to the connecting element ( 28 ). As a result, the closing element ( 15 ) can be screwed onto a male thread of the outlet section ( 5 ) by means of a female thread.
  • FIG. 8 shows an alternative embodiment for construction in accordance with FIG. 7 .
  • the closing system ( 38 ) and the connecting element ( 28 ) are, in this case, not placed coaxially in relation to one another, but are alternately positioned by a tool tray ( 40 ) in a work configuration and/or a rest configuration.
  • the tool tray ( 40 ) can, for example, be designed in a revolver-style arrangement and with a rotary axis ( 41 ).
  • the filling substance ( 21 ) is conveyed to the connecting element ( 28 ), preferably at an ambient temperature, for example in the range of 20° C. to 30° C.
  • the filling substance ( 21 ) cools the material in the container ( 11 ), and assists a rapid form stability of the container ( 11 ) molded. This therefore supports a very short cycle time. It is, however, likewise possible to convey the filling substance ( 21 ) so that it is cooled or heated to a greater degree.
  • the filling substance ( 21 ) can, at least temporarily, be conveyed into the shaping process or the container ( 11 ) at a constant volumetric flow rate. It is, however, also possible for the volumetric flow rate to specify a suitable time profile, in such a way that volumetric flow rates are generated at different intensities at different points in time.
  • the filling substance ( 21 ) Prior to introducing the filling substance ( 21 ), it is possible to extract any air to be found within the parison ( 2 ) and/or replace it by an inert gas. The latter is in particular recommended in the case of filling media ( 21 ) that are susceptible to oxidation.
  • Either pure liquids or liquids containing additives can be used as a filling substance ( 21 ).
  • the possibility of conveying carbonated filling media is taken into consideration.
  • the filling substance ( 21 ) is conveyed to the parison ( 2 ) or the container ( 11 ) under pressure, for example with a pressure of 10 bar, it proves expedient to design any melt flow paths for the filling substance ( 21 ) in such a way that local decompressions due to the flow processes are avoided. A local or temporary decompression could otherwise lead to the outgassing of carbon dioxide.
  • parisons ( 2 ) As an alternative to the heating of—preferably injection molded—parisons ( 2 ) shown in FIG. 1 , it is also possible to produce the parisons ( 2 ) directly prior to their being shaped in the container. This can, for example, be done by means of an injection molding process, such as in the case of a so-called single-stage injection blowing process. Compression molding is likewise possible. Such molding of the parisons ( 2 ) avoids the use of electrical and electronic components in the area of a heating apparatus, or at least considerably reduces the scope of use of such components, since the latter are then only still required for any temperature profiling required.
  • non-corrosive materials are used. It is in particular envisaged that rustproof steels, as well as plastics, will be used. It is especially envisaged that the molds ( 37 ) will be constructed, in whole or in part, from a suitable plastic.
  • the stretching process will be assisted by the filling substance ( 21 ) being supplied.
  • the filling substance ( 21 ) being supplied.
  • the latter can, for example, be done by the setting load applied being measured, and the volumetric flow rate of the filling substance ( 21 ) being controlled in such a way that a minimum setting load is always maintained.
  • the size of the setting load can, in particular, be ascertained in a very simple way by measuring the actuating current or, in the case of pneumatic stretching processes, through a pressure measurement.
  • One or more of the transfer wheels may be equipped with servo drives.
  • a gas exchange takes place in the interior of the parison, in order to in particular block out oxygen or reduce the proportion of oxygen.
  • One instance of rinsing and/or evacuating typically lasts for at the most 0.1 secs.
  • the stretching of the parison ( 2 ) using the stretching rod ( 17 ) typically lasts 0.2 secs.
  • a period of around 0.2 seconds is likewise envisaged for the filling and the resulting shaping of the parison ( 2 ) in to the container ( 11 ).
  • a maximum period of 0.2 secs is required.
  • the process of deoxidizing and relieving the pressure on the filled container occurs extremely rapidly in the case of non-carbonated beverages. In the case of carbonated beverages, this process can take a period of up to 5 seconds.
  • the headspace can be treated subsequently, for example, using high pressure foaming or an admixture of nitrogen.
  • the subsequent conveying of a closing cap can, in the case of carbonated drinks, take a period of up to 1.5 seconds.
  • the processing of closing the bottle or screwing on the cap can, for example, take a period of 1.5 seconds.
  • the mold ( 37 ) opens, and the filled container ( 11 ) is removed and transported away.
  • the filling substance be conveyed with an ambient temperature.
  • an increase in temperature or a drop in temperature are also conceivable in regard to filling the containers at an ambient temperature.
  • the filling process be carried out in two stages, wherein, during the first processing stage, the filling substance is conveyed at a temperature which is higher than the temperature during the second processing stage.
  • the first procedural step may, for example, be carried out if the longitudinal stretching of the parison ( 2 ) is carried out via the stretching rod ( 17 ).
  • the second procedural step then follows the stretching process being carried out, and corresponds to the transverse expansion of the container ( 11 ).
  • various different variants can likewise be implemented.
  • the revolver-like head on the one hand comprises a blowing or molding and filling head and, on the other hand, a capping head.
  • the molding and filling head and the capping head are in fact designed as separate components, however are arranged on every molding and filling station ( 10 ) in such a way that they can be swiveled.
  • only the molding and filling head is located on the rotor or process wheel ( 9 ), and the container that is still open is passed on to a separate closing device, for example to a transport wheel that is equipped with a capping head.
  • the application of the closing elements ( 15 ), for example the closing caps, may, for example, be carried out directly after opening the respective mold ( 37 ) and gripping the container ( 11 ) by means of a holding and gripping element.
  • An advantageous variant consists in keeping the mold ( 37 ) closed, and thus fixing the container ( 11 ) in the correct position, wherein only the outlet is released for a closing element. This release is effected by either the mold ( 37 ) for an angle trajectory being taken to a radially different position or the molding and filling head being swiveled and/or moved in such a way that the container outlet is open to receive a closing element.
  • the closing caps would therefore be relinquished on the rotor or process wheel ( 9 ). It is in particular envisaged that the outlet area of the filled container ( 11 ) be pressurized with an inert gas prior to the closing elements ( 15 ) being relinquished.
  • the filling substance ( 21 ) or ( 21 . 1 ) or the proportion of the filling substance ( 21 ) of ( 21 . 1 ) is conveyed in at least two process phases with different CO2 concentrations and/or at different temperatures.
  • the second or subsequent process phase is, for example, a process phase concluding the shaping and filling phase.
  • One variation consists in cooling the filling substance ( 21 . 1 ) or the proportion of filling substance ( 21 . 1 ) with the greater concentration of carbon dioxide prior to its being introduced, and then, in the second process phase mentioned, introducing the filling substance ( 21 . 1 ) or the corresponding proportion with the greater concentration of carbon dioxide at a lower temperature than the filling substance ( 21 ) or the proportion of the filling substance ( 21 ) of the first process phase into the emerging container ( 11 ). Also solely for this reason, an under-layer is introduced, with a filling substance that is rich in CO2, whereby foam generation, also foam generation when decompressing the containers, is at least reduced to the extent that no disadvantageous product losses occur.
  • the concentration of carbon dioxide in the second process phase should be 30% above the carbon dioxide concentration in the first process phase, in particular 50-100% above the carbon dioxide concentration in the first phase.
  • a CO2-rich filling substance component i.e. the filling substance ( 21 . 1 )
  • One variant consists in the temperature of the filling substance ( 21 . 1 ) or the proportion of the filling substance ( 21 ) of the second process phase being cooled, or being at least 10° C. below the temperature of the first or a preceding process phase, in particular amounting to less than 10° C. and ideally being between 4° C. and 8° C.
  • the pressure of the filling substance ( 21 . 1 ) or the proportion of the filling substance ( 21 . 1 ) possessing the greater carbon dioxide concentration and/or the lower temperature is at least intermittently higher than the pressure of at least one other or the remaining proportion of the filling substance ( 21 ) during the molding process or during the shaping and filling phase, and in fact preferably by at least 1 bar.
  • the pressure on a line section ( 42 ) or a part of the line section, via which the filling substance ( 21 . 1 ) or the proportion of the filling substance ( 21 . 1 ) with the higher carbon dioxide concentration and/or with the lower temperature is conveyed should be greater than the pressure of the remaining filling substance ( 21 ) or the remaining part of the filling substance ( 21 ), and in fact, at least intermittently, be 2 bar to 5 bar higher during the molding process.
  • the advantageous high pressure is retained until shortly before the first decompression.
  • the latter can even be increased if a part of the filling substance ( 11 ) is conveyed past the stretching rod ( 17 ) and a part of the filling substance ( 11 ) through the stretching rod. In that respect, for reasons of expediency the filling substance ( 21 .
  • the stretching rod ( 17 ) is thermally insulated, at least in some areas, in relation to the filling substance ( 21 ) and ( 21 . 1 ).
  • the shaping and filling device or machine thus comprises inter alia at least one heating section or heating device ( 4 ) located along a transport route of a parison ( 2 ) and at least one shaping and filling station ( 10 ) equipped with a mold.
  • the shaping and filling device or machine comprises, inter alia, a liquid supply unit ( 1 ) for the filling substance ( 21 ) and ( 21 . 1 ) to be filled into the containers ( 11 ), as well as a carbonation unit ( 43 ), which is, for example, provided for in the line section ( 42 ), and with which carbon dioxide can be dissolved, at least in the partial current of the filling substance ( 21 .
  • the shaping and filling station ( 10 ) possesses a guiding assembly in the form of a stretching rod ( 17 ), which, at least intermittently, pressurizes the parison ( 2 ) during the time that it is being shaped in to the container ( 11 ), and at least one part of the filling substance ( 21 ) can be conveyed through the channel or interior space ( 23 ) of the stretching rod ( 17 ).
  • At least one outlet opening ( 24 ) of the channel or interior space ( 23 ) is provided at the lower end of the stretching rod ( 17 ).
  • a cooling unit ( 44 ) is provided at least along the line section ( 42 ) for the filling substance ( 21 . 1 ), in which carbon dioxide is dissolved downstream or flows from the carbonation unit ( 43 ).
  • At least the line section ( 42 ), in which the carbon dioxide-rich filling substance ( 21 . 1 ) or a proportion thereof is conveyed should at least be thermally insulated on a partial length, for example with insulation made of teflon or a material containing teflon, and/or be clad with thermal insulation, for instance with teflon or a material containing teflon.
  • FIGS. 9-11 show, as a partial representation and as a section, a stretching rod 17 a , which, in regard to its basic function, corresponds to the stretching rod 17 , i.e. when the respective container ( 11 ) is molded and filled, serves to guide and control in particular the axial stretching of the respective parison ( 2 ) or the emerging container ( 11 ).
  • the stretching rod ( 17 a ) primarily consists of a rod-shaped stretching rod body ( 45 ) with a rounded free stretching rod end ( 45 . 1 ).
  • Multiple channels are constructed in the stretching rod body ( 45 ), and in fact an inner channel ( 46 ) located along the longitudinal axis of the stretching rod ( 17 a ), which, near the end ( 45 .
  • a control valve that is generally designated ( 50 ) in FIG. 9 , is provided inside the stretching rod ( 17 a ), and this control valve makes it possible to produce or interrupt a connection between the inner channel ( 46 ) and the outer channel ( 48 ).
  • control valve ( 50 ) is largely formed by a locking ring ( 51 ) that can be moved axially, which is, for example, pre-tensioned by a spring not detailed in its position (accentuated in FIG. 9 ) allowing for a free connection between the channels ( 46 ) and ( 48 ).
  • a locking ring ( 51 ) that can be moved axially, which is, for example, pre-tensioned by a spring not detailed in its position (accentuated in FIG. 9 ) allowing for a free connection between the channels ( 46 ) and ( 48 ).
  • an actuator for example through a magnetic coil ( 52 ) accommodated in the stretching rod ( 17 a ), the locking ring ( 51 ) can be moved against the impact of the spring in its lower position, interrupting the connection between the channels ( 46 ) and ( 48 ).
  • FIGS. 9-11 the multi-port metering valve ( 22 ) controlled by an electronic control unit ( 53 ), which is in turn designed as a manifold valve, is shown, which is connected to a first terminal or entry point with the supply device ( 20 ) for the filling substance ( 21 ) not shown in FIG. 9 and to a second terminal with the supply device ( 20 . 1 ) for the filling substance ( 21 . 1 ) likewise not shown in FIG. 9 .
  • the outlets of the multi-port metering valve ( 22 ) are connected, via a liquid connection ( 54 ), with the inner channel ( 46 ) or, via a liquid connection ( 55 ), with the external annular channel ( 48 ).
  • the cooling unit ( 44 ) is located in the liquid connection ( 54 ).
  • the control valve ( 50 ) or its magnetic coil ( 52 ) is controlled via the control unit ( 53 ), wherein the control valve ( 50 ), in the variant shown, is designed as an electromagnetic, linear-driven system. This has the special advantage that the closing and opening speeds can be regulated continuously. It is, in that regard, not necessary for the control valve ( 50 ) to be designed to be 100% sealed off; a small quantity of leakage can be tolerated.
  • the stretching rod ( 17 a ) various methods of working are possible, and in fact, for example, the simultaneous introduction of the filling substance, e.g. the filling substance ( 21 ) with no CO2 content or with a reduced CO 2 concentration, at the lower height (N 1 ) via the outlet openings ( 47 ) and at the higher height (N 2 ) via the outlet openings ( 49 ) into the parison ( 2 ) or into the containers ( 11 ) taking shape.
  • the filling substance e.g. the filling substance ( 21 ) with no CO2 content or with a reduced CO 2 concentration
  • control valve ( 50 ) is opened through a corresponding activation of the control unit ( 53 ) for a connection of the two channels ( 46 ) and ( 48 ) and, moreover, the multi-port metering valve ( 22 ) is activated by the control unit ( 53 ) in such a way that, via this metering valve, only one connection to the liquid connection ( 55 ) exists.
  • This operating status is shown in FIG. 9 .
  • a closed control valve ( 50 ) it is, furthermore, possible, by correspondingly activating the multi-port metering valve ( 22 ) via this valve for the filling substance ( 21 ), to produce a connection to both channels ( 46 ) and ( 48 ), so that the filling substance ( 21 ) is, in turn, introduced into to the parison ( 2 ) or into the containers ( 11 ) taking shape, in accordance with the whistling, via the outlet openings ( 47 ) and ( 49 ) at the different heights N 1 and N 2 .
  • this operating state shown in FIG.
  • FIG. 11 This operating state, in the case of which, in turn, the filling substance ( 21 . 1 ) is cooled in the cooling unit ( 44 ), is shown in FIG. 11 .
  • the various operating states shown in FIGS. 9-11 can be combined as desired at the respective shaping and filling phase.
  • a deoxidized interim zone is formed between the heights N 1 and N 2 , which delimits the parts of the filling substance from one another.
  • the aforementioned electromagnetically driven control valve ( 50 ) has a beneficial influence, because it enables low-impulse and thus low-dilution switching.
  • a further advantage of this electromagnetically driven control valve ( 50 ) consists in its being very robust, and, for cleaning purposes, with corresponding cleaning cycles, being able to be very easily cleaned through rapid and, if necessary, repeated switching.
  • FIG. 12 shows, as a simplified sectional representation of a further embodiment, a stretching rod ( 17 b ), which essentially only differs from the stretching rod ( 17 a ) through the fact that, in addition to the two channels ( 46 ) and ( 48 ), a third, annular channel ( 56 ) is provided for in an upper region located more remotely from the end of the stretching rod ( 45 . 1 ), which flows into multiple outlet or discharge openings ( 57 ) at the peripheral surface or girthed area of the stretching rod ( 17 b ) distributed around the axis of the stretching rod ( 17 b ).
  • the control unit ( 53 ) Via the channel ( 56 ), for example, controlled by a control valve ( 58 ) activated by the control unit ( 53 ), after the shaping and filling of the respective container ( 11 ) the decompression of the headspace ( 59 ) formed in the container ( 11 ) via the filling level occurs via the outlet openings ( 47 )—and, in the case of an opened control valve ( 50 ), also via the outlet openings ( 49 )—a further decompression of the container ( 11 ) following the shaping and filling is, for example, possible, controlled by a control valve ( 60 ) driven, for example, by the control unit ( 53 ).
  • the stretching rods ( 17 a ) or ( 17 b ) shown in FIGS. 10-13 or the shaping and filling devices or machines featuring these stretching rods also make it possible—prior to initiating the actual molding and filling phase—to evacuate the respective parison ( 2 ) and/or to rinse with an inert gas—which may, for instance, also be hot—and, in fact, preferably via the lower outlet openings ( 47 ).
  • the outlet openings ( 47 ) and ( 49 ) or the stretching rod ( 17 a ) are constructed at the peripheral surface or girthed area in such a way that the primary direction of radiation of the medium seeping out of the outlet openings ( 47 ) or ( 49 ) is inclined at an angle of less than 90° in relation to the longitudinal axis of the stretching rod ( 17 a ), and in fact at the lower outlet openings ( 47 ), in such a way that this angle opens up to the lower end of the stretching rod ( 45 . 1 ) and at the upper outlet openings ( 49 ) in such a way that this angle opens up to the end of the stretching rod ( 17 a ) facing away from the lower end of the stretching rod ( 45 . 1 ).
  • the outlet openings ( 47 ) or ( 49 ) in particular possess rounded corners or radii, so that local turbulences and cavitation are avoided, and a stable stratification occurs.
  • the rounded corners of the outlet openings ( 47 ) and ( 49 ) are provided for in the area of the stretching rod, both radially inwards and radially outwards.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
US13/982,800 2011-01-31 2011-11-08 Method and device for producing containers which are filled with a liquid filling substance Active 2033-12-20 US10696434B2 (en)

Applications Claiming Priority (16)

Application Number Priority Date Filing Date Title
DE102011009888 2011-01-31
DE102011009888A DE102011009888A1 (de) 2011-01-31 2011-01-31 Verfahren und Vorrichtung zur Herstellung von gefüllten Behältern
DE102011009889A DE102011009889A1 (de) 2011-01-31 2011-01-31 Verfahren und Vorrichtung zur Herstellung von gefüllten Behältern
DE102011009888.7 2011-01-31
DE102011009889 2011-01-31
DE102011009889.5 2011-01-31
DE102011011076A DE102011011076A1 (de) 2011-02-11 2011-02-11 Verfahren sowie Vorrichtung zum Herstellen von mit einem flüssigen Füllgut gefüllten Behältern
DE102011011076.3 2011-02-11
DE102011011076 2011-02-11
DE102011012665 2011-02-28
DE102011012664 2011-02-28
DE102011012664A DE102011012664A1 (de) 2011-02-28 2011-02-28 Verfahren und Vorrichtung zur Herstellung von mit einem flüssigen Füllgut gefüllten Behältern
DE102011012664.3 2011-02-28
DE102011012665.1 2011-02-28
DE102011012665A DE102011012665A1 (de) 2011-02-28 2011-02-28 Verfahren sowie Vorrichtung zum Herstellen von mit einem flüssigen Füllgut gefüllten Behältern
PCT/EP2011/005596 WO2012103905A1 (de) 2011-01-31 2011-11-08 Verfahren sowie vorrichtung zum herstellen von mit einem flüssigen füllgut gefüllten behältern

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US13/982,800 Active 2033-12-20 US10696434B2 (en) 2011-01-31 2011-11-08 Method and device for producing containers which are filled with a liquid filling substance
US13/982,823 Active 2033-09-10 US9718567B2 (en) 2011-01-31 2012-01-17 Method and device for producing containers which are filled with a liquid filling substance
US13/982,814 Active 2032-11-14 US9278770B2 (en) 2011-01-31 2012-01-17 Method and device for producing containers which are filled with a liquid filling substance

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US13/982,814 Active 2032-11-14 US9278770B2 (en) 2011-01-31 2012-01-17 Method and device for producing containers which are filled with a liquid filling substance

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EP2670668B1 (de) 2020-03-04

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